Jumping-wall.



0. LOTZING.

J UMPING WALL. APPLICATION FILED MAR. 1, 1912.

Patented June 4, 1912.

COLUMBIA PLANOGRAPH IO-.WASHINGTON. l1v c.

TTED %TATE@ PATENT @FFTQE.

OTTO LOTZIN G, 01? BRUNSWICK, GERMANY.

J U'MPING-WALL.

To all whom it may concern Be it known that I, Or'ro LOTZING, a subject of the German Emperor, residing at Brunswick, in Germany, have invented certain new and useful Improvements in Jumping-lValls, of which the following is a specification.

Folding walls for jumping are already known, which can rotate about a spindle and are brought back to the vertical position by means of springs or weights. These walls are however not suitable in every case, as the great amplitude of movement of the wall and the passages of light during the movement, considerably disturb any horse which may be following and make it shy. Moreover, a wall, if it is constantly used, must be made of very strong material, which in known constructions is not always possible or is possible only at a very high cost.

According to this invention, a properly made wall of considerable width is used, the roof-shaped upper part of which, with the striking roller, can be made to collapse by means of suitable joints, and in the position of rest is held in extended form by means of springs and the like.

A cross-section through the upper part of the preferred construction is shown in the accompanying drawing.

A wall made of stone or the like, of any desired width, is provided on its upper longitudinal sides with wall plates a or the like to which are pivoted plates Z) forming a portion of the roof-shaped part. To the said plates Z) are pivoted by means of hinges 0 upper plate portions J telescopically arranged in relation to a double walled plate 9 which is pivoted at the top to a central wall 6 rotatable about the spindle Z. The part 9 is of double construction forming a pocket for the plate (Z to slide in. The up per part can accordingly swing to one side, while the opposite side is stretched, this stretching being rendered possible owing to the relative movement of the plates (Z and g which are guided in parallel guides. The whole roofshaped upper part consisting of plates is held upright owing to the wall 6 being controlled by springs or weights, and always turns back to the vertical position in the same way as the known jumping walls. At the top, the wall e is provided with a roller f mounted in any desired manner and intended to save the feet of the horses from Specification of Letters Patent.

Application filed March 1, 1912.

Patented June 4, 1912. Serial No. 681,016.

injury if they should strike it. In order to improve the action of the spring or weight controlled central part c, the movement of the two plates (Z and g which slide relatively to each other are influenced by means of springs arranged around bolts as shown pivoted to the wall 6 and engaging eyes 70 secured to the plate (Z, said eyes extending through slots in the inner part of the plate g, the slots serving as guides for the movement of said eyes. hen the wall 6 bends outward, and one plate (Z, is consequently pulled out, the spring h is compressed, so that the said spring also cooperates in raising the wall 6 and therefore causes the lateral wall to return to normal position rapidly.

The operation of the device is as follows: When the horse does not jump high enough, his feet touch the roller f or the plate (Z at one side. Owing to this, the parts 7) (Z and g on the opposite side are bent in at the hinge or joint. At the same time, the central wall 6 is inclined, and the obstacle is reduced in height. As a noteworthy advantage, it must be mentioned that in the present wall in which the plates Z) and (Z can be made of thick material, there is no danger of injury of any kind, as is the case in all constructions in which the lateral walls are merely formed by layers of fabric through which the horse can put his foot. No light can pass, and the bending-in of the upper part of the wall is perfectly noiseless while owing to the stability of construction, great durability is obtained. The upper part according to this construction can also be made in separate sections in the longitudinal direction, for the purpose of facilitating repalrs.

lVhat I claim as my invention and desire to secure by Letters Patent is 1. In a jumping wall, an upper portion comprising an element pivotally connected to each side of the wall, a telescopic element connected to each of the first-mentioned elements, a pivoted support, means for maintaining said support in an upright position and pivots for attaching both the telescopic elements to the top of the pivoted support, to form with the first-mentioned elements a roof-shaped structure.

2. The combination with a wall of a pivoted support extending above the top of said wall, means for maintaining said support in an upright position, a pair of plates pivoted one on each side of said support and another pair of plates parallel to each of said first-mentioned plates and adapted to telescope relatively thereto, a Wall plate on each side of the Wall, a plate pivoted to each of said Wall plates and adapted to connect the same to its corresponding telescopic plate and a spring adapted to influence the movement of the telescopic plates.

8. In a jumping Wall, an upper portion comprising an element pivotally connected to each side of the Wall, a telescopic element connected by longitudinal joints to each of the first-mentioned elements, a pivoted Wall, 15

Wall, above the connection of said telescopic 20 elements.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses. v

OTTO LOTZING.

Witnesses HEINRICH Bonorsin, JULIUS SECKEL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

